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Well, as soon as I got done swapping the oil tank and fixing the leaking fuel line I discovered another challenge - a silent failure of my upper front landing gear.

It literally looks like the front upper leg separated clean at the welding point without any other damage whatsoever up or down the landing gear.There was no dramatic landing or frankly any particular precipitating landing event that I can think of - after an uneventful flight I simply noticed a bit more play in the front gear and subsequently discovered the issue.

I have no idea what happened and given that there is no other damage anywhere and the leg was being held firm by the lower attachment assembly, I am thinking this was some kind of issue with the original weld and after 300+ landings it finally gave out.

I got the replacement part ordered ( $480 + shipping ) and it will be here in about a week , so ultimately not that big of a deal but still, I got lucky that I caught this issue early on before the subsequent failure of the lower attachment ( which would eventually fail without the upper support ) - it kind of underscores the fact that anything can happen and importance of preflight inspections.

Here is how the part supposed to look ( with the weld highlighted - factory picture ) - firewall side view with lower attachment assembly.

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And here how it failed on my plane - inside cockpit view

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Interestingly, I got a few pictures from about 3 or 4 months ago of that strut that were taken for different purpose… to me it looks like the weld was already developing a crack.

I haven’t really had a chance to talk to the factory – I mean, B. Canino was very appreciative of rather extensive photographic documentation I provided for him but that’s about it.As far as hard landings, I am sure these didn’t help and I had a few firmer ones myself but nothing really bad that would warrant this.I actually have talked to a few Sting owners ( including Rich of Sting Flight who had a very hard landing at Lake Tahoe a few years back ) and all of them indicated completely different pattern of failure related to either hard or side loaded landings.It is all about bending/crushing damage at certain points ( indicated by the arrows) which to me kind of makes sense - I always inspect the gear looking for any signs of slow, progressing , landing induced failure, like stuff slowly bending etc ...

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Anyway, my personal theory is that this is more related to takeoffs because, ever since I bought the plane , I always had this nasty front gear rattle with every takeoff – I was told at SportAir that it was related to unbalanced front wheel but I could never get anyone to balance that wheel to get rid of it.To me , the clean break on this weld looks like some kind of vibration induced failure ( combined with a weak weld to begin with ) – I am gonna make sure that when we start replacing the strut , will check every bolt and nut and see if we can find anything loose ( this stuff is very hard to get otherwise as it is hidden deep in the cockpit side of the firewall)

On the subject of TL Ultralight looking at my broken strut .. I guess they would rather spend their time more productively , like for instance making/releasing videos like this one https://youtu.be/ZO0h8bh9JVQ

ShawnM wrote:TL Ultralight? Who? Were there airplanes in that video? All I saw were boobs!

Yeah, their booths at European aircraft shows are like ...really odd mix of high end , carbon fiber manufacturing themes ....and a cheap Titty Twister style go-go club ( but unlike the namesake in the movie, with crappy music ) .. whatever works ..

Last edited by Warmi on Thu Oct 25, 2018 9:37 pm, edited 2 times in total.

Well, one is the official promotion video of a plane manufacturer in Europe and the other is just a minute or two from a high grossing Quenteen Tarantino movie ... nothing really that a well brought up adult with classical education trained mind can’t handle imho

But I took the other one down - I guess anyone can look up for themselves what a Titty Twister bar theme looks like ( the music themes in that bar was awesome though )